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Renesas ISL9241IRTZ-TK
- Part No.:
- ISL9241IRTZ-TK
- Manufacturer:
- Renesas
- Category:
- Battery Chargers
- Package:
- 32-WFQFN Exposed Pad
- Datasheet:
-
ISL9241IRTZ-TK.pdf
- Description:
- IC BATT CHG LI-ION 2-4CEL 32TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,707
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Product details
Overview
ISL9241IRTZ-TK from Renesas Electronics is a digitally configurable buck-boost battery charger IC supporting NVDC and HPBB charging modes for 2–4-cell Li-ion batteries, with 3.9V–23.4V input range, 3.9V–18.304V system/battery output, SMBus/I²C interface, and USB-C Power Delivery (PD) Fast Role Swap and PPS support - deployed in Ultrabook and notebook platforms requiring adaptive power path control.
For engineers reviewing the ISL9241IRTZ-TK datasheet, ISL9241IRTZ-TK pinout, ISL9241IRTZ-TK application, or ISL9241IRTZ-TK equivalent, key selection considerations include NVDC/HPBB mode switching capability, PSYS analog output for IMVP8/9 compliance, OTG reverse buck-boost operation from 2–4-cell batteries, and JEITA-compliant NTC-based thermal regulation.
Technical Context
The ISL9241IRTZ-TK implements a four-FET buck-boost topology using all-NFETs, enabling autonomous mode switching between NVDC and hybrid power bypass (HPBB) via firmware-controlled register configuration. It integrates an 8-bit ADC for real-time monitoring of adapter current (AMON), battery current (BMON), and system voltage.
It delivers IMVP8/9-compliant PSYS analog output proportional to total platform power and supports USB-C PD Fast Role Swap with independent forward/reverse compensation pins - enabling bidirectional power delivery (OTG) from 2- to 4-cell batteries to the adapter port under PPS specifications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | All-NFET buck-boost with NVDC and HPBB mode support - enables seamless power-path arbitration between adapter and battery without dead zones. |
| Input Voltage Range | 3.9V to 23.4V - accepts wide-range DC sources including USB-C PD ports, travel adapters, and legacy AC/DC chargers. |
| Output Voltage Range | 3.9V to 18.304V - programmable system/battery rail voltage for 2–4-cell Li-ion configurations. |
| Interface | SMBus/I²C - allows full digital configuration of charging parameters, protection thresholds, and mode selection. |
| PSYS Output | Analog signal compliant with IMVP8/9 - connects directly to core voltage regulators for dynamic platform power management. |
| OTG Support | Reverse buck, boost, or buck-boost operation - enables USB-C PD output with Programmable Power Supply (PPS) capability. |
| Thermal Compliance | JEITA-compliant NTC interface - enables safe, temperature-adaptive charge termination and rate limiting. |
Pinout & Package
ISL9241IRTZ-TK is housed in a 4×4 mm, 32-lead TQFN package with exposed thermal pad (Renesas package code: RTZ). Pin functions are validated per Renesas ISL9241 datasheet Rev.5.0 (Aug 2021).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Primary input supply | Accepts 3.9V–23.4V DC input; feeds internal FET drivers and bias circuitry. |
| VSYS | System power output | Regulated output rail for host platform; dynamically sourced from adapter, battery, or both. |
| VBAT | Battery connection | Connects to 2–4-cell Li-ion pack; supports charging, discharging, and ship-mode ultra-low-power state. |
| AMON / BMON | Current sense outputs | Analog monitor signals for adapter and battery current - used for power budgeting and safety limiting. |
| PSYS | Platform power monitor | IMVP8/9-compliant analog output proportional to total system power consumption. |
| PROCHOT# | Thermal throttle signal | Open-drain output asserted during thermal or power-limit events to throttle CPU/core regulators. |
| SCL / SDA | SMBus/I²C interface | Two-wire digital bus for configuring registers, reading telemetry, and initiating mode transitions. |
| NTC | Temperature sensing input | Connects to NTC thermistor for JEITA-compliant charge profile adaptation and thermal cutoff. |
Key Features
| Feature | Design Value |
|---|---|
| NVDC + HPBB dual-mode firmware control | Enables dynamic selection between narrow-voltage direct charging and hybrid power bypass - optimizing efficiency across load and source conditions. |
| USB-C PD Fast Role Swap & PPS support | Allows instantaneous role reversal between source/sink with precise voltage/current control - essential for USB-C laptop docking and accessory power negotiation. |
| Autonomous charging with end-of-charge detection | Eliminates external microcontroller dependency for basic charge sequencing - reduces BOM count and firmware complexity. |
| Independent forward/reverse compensation | Separate loop compensation networks for charging (forward) and OTG (reverse) modes - ensures stability across bidirectional power flow. |
| Intel VMIN supplemental power support | Integrates active protection against undershoot during transient load steps - maintains stable core voltage under high-dI/dt conditions. |
Applications
| Ultrabook Power Management | Notebook Battery Charging |
|---|---|
Use Scenario: High-efficiency dual-source power delivery in fanless Ultrabook designs with USB-C PD input and multi-cell battery. IC Role / Device Role / Timing Role: Primary buck-boost charger and system power arbiter managing adapter-to-system, battery-to-system, and adapter-to-battery paths. Use Value: Eliminates need for discrete OR-ing FETs and external power-path controllers while maintaining IMVP8/9 PSYS compliance. | Use Scenario: Adaptive charging for 3-cell Li-ion battery packs in thin-and-light notebooks with thermal-aware JEITA profiles. IC Role / Device Role / Timing Role: Configurable battery charger with integrated NTC interface and autonomous end-of-charge logic. Use Value: Reduces firmware overhead and enables safe, temperature-compensated charge termination without host intervention. |
| USB-C Power Bank | Tablet Platform Charging |
Use Scenario: Bidirectional USB-C PD power bank supporting simultaneous input (recharge) and output (device charging) via PPS. IC Role / Device Role / Timing Role: Reverse buck-boost controller enabling OTG mode with Fast Role Swap and precise PPS voltage regulation. Use Value: Delivers ±20mV PPS accuracy over 3–21V range - meeting USB-IF certification requirements for programmable power supplies. | Use Scenario: Compact 2-cell Li-ion charging solution for Android tablets with limited PCB area and thermal headroom. IC Role / Device Role / Timing Role: Single-chip charger with integrated AMON/BMON current sensing and PROCHOT# thermal signaling. Use Value: Provides real-time power telemetry and thermal throttling coordination with SoC - critical for sustained performance in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar battery charger applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| bq25792RTWR | TI part uses integrated ADC with higher resolution (12-bit); lacks PSYS analog output and IMVP compliance. | Targets general-purpose USB-C PD charging but not Intel platform power domain integration. | Select when PSYS is unnecessary and higher-precision telemetry is prioritized over IMVP ecosystem compatibility. |
| MP2762GQZ | MPS part supports 1–4-cell Li-ion but uses I²C-only interface; no SMBus ALERT# or PROCHOT# pin. | Designed for cost-sensitive portable devices without IMVP or thermal throttling coordination requirements. | Choose for non-Intel platforms where SMBus alert signaling and CPU thermal handshake are not required. |
Compared with bq25792RTWR and MP2762GQZ, the ISL9241IRTZ-TK uniquely combines IMVP8/9 PSYS output, PROCHOT# signaling, and firmware-configurable NVDC/HPBB modes - making it the only option for Intel-compliant Ultrabook and notebook platforms requiring coordinated thermal and power-domain management.
Availability
ISL9241IRTZ-TK is available at Aetrix Electronics and suitable for Ultrabook power management, notebook battery charging, and USB-C PD power bank applications requiring stable component supply, long-term lifecycle support, and IMVP-compliant platform integration.
Supply support for ISL9241IRTZ-TK includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power management, and connectivity solutions for automotive, industrial, and computing markets.
The ISL9241IRTZ-TK belongs to Renesas' R3™-based battery charger product line, engineered specifically for Intel IMVP-compliant mobile platforms requiring adaptive power-path control, USB-C PD integration, and JEITA-compliant thermal management.
FAQ
What charging topologies does the ISL9241IRTZ-TK support?
The ISL9241IRTZ-TK supports both Narrow Voltage Direct Charging (NVDC) and Hybrid Power Buck Boost (HPBB) topologies using an all-NFET architecture. It enables firmware-controlled mode switching between them and also supports bypass mode for direct adapter-to-system power delivery. These capabilities are confirmed in the Renesas ISL9241 datasheet Rev.5.0 and apply specifically to the ISL9241IRTZ-TK variant.
Does the ISL9241IRTZ-TK support USB-C Power Delivery with Programmable Power Supply (PPS)?
Yes, the ISL9241IRTZ-TK supports USB-C PD Fast Role Swap and PPS operation in OTG mode, allowing reverse buck, boost, or buck-boost power delivery from 2- to 4-cell batteries to the adapter port. This functionality is explicitly documented in the ISL9241 datasheet Rev.5.0 and applies to the ISL9241IRTZ-TK package variant.
What is the purpose of the PSYS pin on the ISL9241IRTZ-TK?
The PSYS pin on the ISL9241IRTZ-TK provides an analog output proportional to total platform power consumption, fully compliant with Intel IMVP8 and IMVP9 specifications. It connects directly to core voltage regulators to enable dynamic power domain management - a feature confirmed for the ISL9241IRTZ-TK in Renesas' official documentation.
How does the ISL9241IRTZ-TK handle thermal regulation during charging?
The ISL9241IRTZ-TK supports JEITA-compliant charging via its dedicated NTC pin, enabling temperature-adaptive charge voltage and current profiling. It also features a PROCHOT# open-drain output for thermal throttling coordination with host processors - both functions are validated for the ISL9241IRTZ-TK in the official Renesas datasheet.
Is the ISL9241IRTZ-TK pin-compatible with other members of the ISL9241 family?
The ISL9241IRTZ-TK uses the 32-lead TQFN (RTZ) package, which is the standard package for the ISL9241 family. All variants share identical pinout and footprint per Renesas datasheet Rev.5.0; however, register defaults and firmware features may differ - always verify configuration settings for the specific ISL9241IRTZ-TK device before design-in.
ISL9241IRTZ-TK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Battery Chemistry:
- Lithium Ion
- Number of Cells:
- 2 ~ 4
- Current - Charging:
- Constant - Programmable
- Programmable Features:
- Current
- Fault Protection:
- Over Current, Over Temperature, Over Voltage
- Charge Current - Max:
- -
- Battery Pack Voltage:
- 3.9V ~ 18.304V
- Voltage - Supply (Max):
- 23.4V
- Interface:
- I2C, SMBus
- Operating Temperature:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-TQFN (4x4)
ISL9241IRTZ-TK FAQ
1.How can I place an order for ISL9241IRTZ-TK through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL9241IRTZ-TK on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL9241IRTZ-TK reliable?
The price and inventory of ISL9241IRTZ-TK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL9241IRTZ-TK is usually 5 days.
3.What payment methods are accepted for ISL9241IRTZ-TK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL9241IRTZ-TK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL9241IRTZ-TK?
ISL9241IRTZ-TK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL9241IRTZ-TK order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL9241IRTZ-TK?
For technical support, including ISL9241IRTZ-TK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL9241IRTZ-TK requirements.
6.How does Aetrix verify that ISL9241IRTZ-TK is sourced from the original manufacturer or authorized distributors?
All ISL9241IRTZ-TK products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL9241IRTZ-TK meets industry standards.
7.What is the process for return or replacement of ISL9241IRTZ-TK?
All ISL9241IRTZ-TK units undergo pre-shipment inspection (PSI). If there is an issue with ISL9241IRTZ-TK, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL9241IRTZ-TK part is unused and in its original packaging.
Return procedure for ISL9241IRTZ-TK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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